| 摘要 |
PROBLEM TO BE SOLVED: To provide a symmetric waterproof pan for enabling a bathtub to be installed or a wash place to be constructed in either a right or left region of the waterproof pan. SOLUTION: The waterproof pan P has a region L or R where the bathtub T is installed and a region R or L where the wash plate is constructed existing symmetric. In the right and left regions L, R, horizontal bathtub residing planes 1 are provided which have the same height. This symmetric waterproof pan P enables the selection of the bathtub to be installed or the wash place to be constructed in either the right or left region L or R. COPYRIGHT: (C)2006,JPO&NCIPI
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